Date: Mon, 1 Nov 2021 14:32:54 GMT From: Mark Johnston <markj@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 8b3c771fc62a - stable/13 - Add a KASAN option to the kernel build Message-ID: <202111011432.1A1EWsuk021219@gitrepo.freebsd.org>
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The branch stable/13 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=8b3c771fc62af7d0d9e5b36e835892924e44b144 commit 8b3c771fc62af7d0d9e5b36e835892924e44b144 Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2021-04-13 20:29:47 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2021-11-01 13:56:14 +0000 Add a KASAN option to the kernel build LLVM support for enabling KASAN has not yet landed so the option is not yet usable, but hopefully this will change soon. Reviewed by: imp, andrew Sponsored by: The FreeBSD Foundation (cherry picked from commit 01028c736cbcdba079967c787bee1551fc8439aa) --- sys/conf/kern.pre.mk | 10 ++++++++++ sys/conf/options | 1 + 2 files changed, 11 insertions(+) diff --git a/sys/conf/kern.pre.mk b/sys/conf/kern.pre.mk index bb52d1b9fbc4..8cab54d0763a 100644 --- a/sys/conf/kern.pre.mk +++ b/sys/conf/kern.pre.mk @@ -107,6 +107,16 @@ PROF= -pg .endif DEFINED_PROF= ${PROF} +KASAN_ENABLED!= grep KASAN opt_global.h || true ; echo +.if !empty(KASAN_ENABLED) +SAN_CFLAGS+= -fsanitize=kernel-address \ + -mllvm -asan-stack=true \ + -mllvm -asan-instrument-dynamic-allocas=true \ + -mllvm -asan-globals=true \ + -mllvm -asan-use-after-scope=true \ + -mllvm -asan-instrumentation-with-call-threshold=0 +.endif + KCSAN_ENABLED!= grep KCSAN opt_global.h || true ; echo .if !empty(KCSAN_ENABLED) SAN_CFLAGS+= -fsanitize=thread diff --git a/sys/conf/options b/sys/conf/options index 121a23ed876c..774850158221 100644 --- a/sys/conf/options +++ b/sys/conf/options @@ -229,6 +229,7 @@ ZSTDIO opt_zstdio.h # Sanitizers COVERAGE opt_global.h +KASAN opt_global.h KCOV KCSAN opt_global.h KUBSAN opt_global.h
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